DOC-10729: fix broken internal link (#3687)

Author: osfameron

modules/learn/pages/clusters-and-availability/xdcr-with-scopes-and-collections.adoc

@@ -61,7 +61,7 @@ However, although the target bucket contains a scope named `ScopeB`, this does _
 Therefore, since `ScopeB.CollectionB` is a keyspace unique to the source, no implicit mapping is established with the target, and no replication is automatically initiated.
 +
 Note, however, if an identical keyspace is _subsequently_ established within the target bucket, this is eventually detected by XDCR, by means of a periodic check.
-At this point, a _backfill pipeline_ is automatically created, and is maintained for a temporary period; for the purpose of replicating any dropped data: this is described below, in xref:learn:collections-and-availability/xdcr-overview.adoc#target-collection-removal-and-addition[Target-Collection Removal and Addition].
+At this point, a _backfill pipeline_ is automatically created, and is maintained for a temporary period; for the purpose of replicating any dropped data: this is described below, in <<target-collection-removal-and-addition>>.
 
 For the practical steps required to set up implicit mappings, see
 xref:manage:manage-xdcr/replicate-using-scopes-and-collections.adoc#replicate-data-between-collections-implicitly-with-the-ui[Replicate Data Between Collections Implicitly, with the UI].